I had the different, but still unpleasant reaction using MA6600 with Klipsch Cornwall III's, plenty of bass, but too bright, just when things got hoping, the horns would get over-driven. I ended up just using the MA6600 front end to drive a tube backend. (Luxman MB-3045) That synergy worked much better. Someday the Cornwall's will get swapped for B&W 805's.